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Di Lodovico S, Petrini M, Di Fermo P, De Pasquale V, De Martino L, D'Ercole S, Nocera FP, Di Giulio M. Staphylococcus pseudintermedius and Pseudomonas aeruginosa Lubbock Chronic Wound Biofilm (LCWB): a suitable dual-species model for in vitro studies. Microbes Infect 2024:105384. [PMID: 38944110 DOI: 10.1016/j.micinf.2024.105384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 06/21/2024] [Accepted: 06/21/2024] [Indexed: 07/01/2024]
Abstract
Antimicrobial treatment of methicillin-resistant Staphylococcus pseudintermedius associated with canine wounds represents an important challenge. The aim of this study was to create a canine wound infection model, Lubbock Chronic Wound Biofilm (LCWB), with a focus on S. pseudintermedius, drawing inspiration from the established human model involving S. aureus. Methicillin-resistant S. pseudintermedius 115 (MRSP) and Pseudomonas aeruginosa 700 strains, isolated from dog wounds, were used to set up the LCWB at 24, 48 and 72h. The LCWBs were evaluated in terms of volume, weight, and microbial CFU/mg. The microbial spatial distribution in the LCWBs was assessed by SEM and CLSM imaging. The best incubation time for the LCWB production in terms of volume (3.38 cm3 ± 0.13), weight (0.86 gr ± 0.02) and CFU/mg (up to 7.05 x 106 CFU/mg ± 2.89 x 105) was 48h. The SEM and CLSM images showed a major viable microbial colonization at 48h with a non-mixed bacteria with a prevalence of MRSP on the surface and P. aeruginosa 700 in the depth of the wound. The obtained findings demonstrate the capability of S. pseudintermedius to grow together P. aeruginosa in the LCWB model, representing the suitable model to reproduce the animal chronic wound in vitro.
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Affiliation(s)
- Silvia Di Lodovico
- Department of Pharmacy, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Morena Petrini
- Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" of Chieti, Italy
| | - Paola Di Fermo
- Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" of Chieti, Italy
| | - Valeria De Pasquale
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Luisa De Martino
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Simonetta D'Ercole
- Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" of Chieti, Italy
| | - Francesca Paola Nocera
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy.
| | - Mara Di Giulio
- Department of Pharmacy, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
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Xiu Y, Dai Y, Yin S, Wei Q. Analysis of the Class 1 Integrons, Carbapenemase Genes and Biofilm Formation Genes Occurrence in Acinetobacter baumannii Clinical Isolates. Pol J Microbiol 2024; 73:189-197. [PMID: 38808771 PMCID: PMC11192457 DOI: 10.33073/pjm-2024-017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 03/28/2024] [Indexed: 05/30/2024] Open
Abstract
Acinetobacter baumannii is a non-fermentative Gram-negative bacterium that can cause nosocomial infections in critically ill patients. Carbapenem-resistant A. baumannii (CRAB) has spread rapidly in clinical settings and has become a key concern. The main objective of this study was to identify the distribution of integrons and biofilm-formation-related virulence genes in CRAB isolates. A total of 269 A. baumannii isolates (219 isolates of CRAB and 50 isolates of carbapenem-sensitive A. baumannii (CSAB)) were collected. Carbapenemase genes (bla KPC, bla VIM, bla IMP, bla NDM, and bla OXA-23-like) and biofilm-formation-related virulence genes (abal, bfms, bap, and cusE) were screened with PCR. Class 1 integron was screened with PCR, and common promoters and gene cassette arrays were determined with restriction pattern analysis combined with primer walking sequencing. Whole-genome sequencing was conducted, and data were analyzed for a bla OXA-23-like-negative isolate. All 219 CRAB isolates were negative for bla KPC, bla VIM, bla IMP, and bla NDM, while bla OXA-23-like was detected in 218 isolates. The detection rates for abal, bfms, bap, and cusE in 219 CRAB were 93.15%, 63.93%, 88.13%, and 77.63%, respectively. Class 1 integron was detected in 75 CRAB (34.25%) and in 3 CSAB. The single gene cassette array aacA4-catB8-aadA1 with relatively strong PcH2 promoter was detected in class 1 integrons. The bla OXA-23-like-negative CRAB isolate was revealed to be a new sequence type (Oxford 3272, Pasteur 2520) carrying bla OXA-72, bla OXA-259, and bla ADC-26. In conclusion, bla OXA-23-like was the main reason for CRAB's resistance to carbapenems. A new (Oxford 3272, Pasteur 2520) CRAB sequence type carrying the bla OXA-72, bla OXA-259, and bla ADC-26 was reported.
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Affiliation(s)
- Yu Xiu
- Department of Laboratory Medicine, Anhui University of Science and Technology Affiliated Fengxian Hospital, Shanghai, China
| | - Yueru Dai
- Department of Laboratory Medicine, Anhui University of Science and Technology Affiliated Fengxian Hospital, Shanghai, China
| | - Shasha Yin
- Department of Laboratory Medicine, Anhui University of Science and Technology Affiliated Fengxian Hospital, Shanghai, China
| | - Quhao Wei
- Department of Laboratory Medicine, Anhui University of Science and Technology Affiliated Fengxian Hospital, Shanghai, China
- Department of Laboratory Medicine, Southern Medical University Affiliated Fengxian Hospital, Shanghai, China
- Department of Laboratory Medicine, Shanghai University of Medicine and Health Sciences Affiliated Sixth People’s Hospital South Campus, Shanghai, China
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Saikia S, Gogoi I, Oloo A, Sharma M, Puzari M, Chetia P. Co-production of metallo-β-lactamase and OXA-type β-lactamases in carbapenem-resistant Acinetobacter baumannii clinical isolates in North East India. World J Microbiol Biotechnol 2024; 40:167. [PMID: 38630176 DOI: 10.1007/s11274-024-03977-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 04/03/2024] [Indexed: 04/19/2024]
Abstract
Carbapenem-resistant Acinetobacter baumannii poses a significant threat to public health globally, especially due to its ability to produce multiple carbapenemases, leading to treatment challenges. This study aimed to investigate the antibiotic resistance pattern of carbapenem-resistant A. baumannii isolates collected from different clinical settings in North East India, focusing on their genotypic and phenotypic resistance profiles. A total of 172 multidrug-resistant A. baumannii isolates were collected and subjected to antibiotic susceptibility test using the Kirby-Bauer disk diffusion method. Various phenotypic tests were performed to detect extended-spectrum β-lactamase (ESBL), metallo-β-lactamase (MBL), class C AmpC β-lactamase (AmpC), and carbapenem hydrolyzing class D β-lactamase (CHDL) production among the isolates. Overexpression of carbapenemase and cephalosporinase genes was detected among the isolates through both phenotypic and genotypic investigation. The antibiotic resistance profile of the isolates revealed that all were multidrug-resistant; 25% were extensively drug-resistant, 9.30% were pan-drug-resistant, whereas 91.27% were resistant to carbapenems. In the genotypic investigation, 80.81% of isolates were reported harbouring at least one metallo-β-lactamase encoding gene, with blaNDM being the most prevalent at 70.34%, followed by blaIMP at 51.16% of isolates. Regarding class D carbapenemases, blaOXA-51 and blaOXA-23 genes were detected in all the tested isolates, while blaOXA-24, blaOXA-48, and blaOXA-58 were found in 15.11%, 6.97%, and 1.74% isolates respectively. Further analysis showed that 31.97% of isolates co-harboured ESBL, MBL, AmpC, and CHDL genes, while 31.39% of isolates co-harboured ESBL, MBL, and CHDL genes with or without ISAba1 leading to extensively drug-resistant or pan drug-resistant phenotypes. This study highlights the complex genetic profile and antimicrobial-resistant pattern of the isolates circulating in North East India, emphasizing the urgent need for effective infection control measures and the development of alternative treatment strategies to combat these challenging pathogens.
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Affiliation(s)
- Shyamalima Saikia
- Molecular Plant Taxonomy and Bioinformatics Research Laboratory, Department of Life Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
| | - Indrani Gogoi
- Molecular Plant Taxonomy and Bioinformatics Research Laboratory, Department of Life Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
| | - Amos Oloo
- Molecular Plant Taxonomy and Bioinformatics Research Laboratory, Department of Life Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
| | - Mohan Sharma
- Integrated Molecular Diagnostic and Research Laboratory (BSL-2), District Hospital Tuensang, Tuensang, Nagaland, 798612, India
| | - Minakshi Puzari
- Molecular Plant Taxonomy and Bioinformatics Research Laboratory, Department of Life Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
| | - Pankaj Chetia
- Molecular Plant Taxonomy and Bioinformatics Research Laboratory, Department of Life Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India.
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Hsueh SC, Huang YT, Ko WC, Liu IM, Hsieh PC, Jean SS. In vitro antimicrobial susceptibility data of global meropenem-resistant Acinetobacter baumannii isolates causing pneumonia: Data from the Antimicrobial Testing Leadership and Surveillance Program, 2014-2021, and re-estimations of susceptibility breakpoints and appropriate dosages of important antibiotics for pneumonia treatment. J Glob Antimicrob Resist 2024; 36:411-418. [PMID: 38331030 DOI: 10.1016/j.jgar.2024.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/21/2024] [Accepted: 01/24/2024] [Indexed: 02/10/2024] Open
Abstract
OBJECTIVES To evaluate the susceptibility of globally pneumonia-causing meropenem-resistant (MEM-R) Acinetobacter baumannii isolates against important antibiotics and estimate appropriate dosages of indicated antibiotics. METHODS We extracted the 2014-2021 Antimicrobial Testing of Leadership Surveillance database regarding the susceptibility of MEM-R A. baumannii isolates causing pneumonia against important antibiotics. The susceptibility and carbapenemase-encoding gene (CPEG) data of pneumonia-causing MEM-R A. baumannii isolates from patients hospitalized in intensive care units of five major regions were analyzed. The susceptibility breakpoints (SBP) recommended by the Clinical and Laboratory Standards Institute (CLSI) in 2022, other necessary criteria [SBP of MIC for colistin, 2 mg/L, in the CLSI 2018; and cefoperazone-sulbactam (CFP-SUL), 16 mg/L], and the pharmacokinetic and pharmacodynamic data of indicated antibiotics were employed. RESULTS Applying the aforementioned criteria, we observed the susceptible rates of colistin, minocycline, and CFP-SUL against the pneumonia-causing MEM-R A. baumannii isolates globally (n = 2905) were 93.2%, 69.1%, and 26.3%, respectively. Minocycline was significantly more active in vitro (MIC ≤4 mg/L) against the pneumonia-causing MEM-R A. baumannii isolates collected from North and South America compared to those from other regions (>90% vs. 58-72%). Additionally, blaOXA-23 and blaOXA-72 were the predominant CPEG in pneumonia-causing MEM-R A. baumannii isolates. CONCLUSIONS After deliberative estimations, dosages of 200 mg minocycline intravenously every 12 h (SBP, 8 mg/L), 100 mg tigecycline intravenously every 12 h (SBP, 1 mg/L), and 160 mg nebulized colistin methanesulphonate every 8 h (SBP, 2 mg/L) are needed for the effective treatment of pneumonia-causing MEM-R A. baumannii isolates.
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Affiliation(s)
- Shun-Chung Hsueh
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yu-Tsung Huang
- Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan; Department of Laboratory Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wen-Chien Ko
- Department of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - I-Min Liu
- Department of Pharmacy, College of Pharmacy and Health Care, Tajen University, Pingtung, Taiwan
| | - Po-Chuen Hsieh
- Department of Pharmacy, College of Pharmacy and Health Care, Tajen University, Pingtung, Taiwan
| | - Shio-Shin Jean
- Department of Pharmacy, College of Pharmacy and Health Care, Tajen University, Pingtung, Taiwan; Departments of Internal Medicine and Critical Care Medicine, Min-Sheng General Hospital, Taoyuan, Taiwan.
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Bouhrour N, van der Reijden TJK, Voet MM, Schonkeren-Ravensbergen B, Cordfunke RA, Drijfhout JW, Bendali F, Nibbering PH. Novel Antibacterial Agents SAAP-148 and Halicin Combat Gram-Negative Bacteria Colonizing Catheters. Antibiotics (Basel) 2023; 12:1743. [PMID: 38136778 PMCID: PMC10741160 DOI: 10.3390/antibiotics12121743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
The antibiotic management of catheter-related infections (CRIs) often fails owing to the emergence of antimicrobial-resistant strains and/or biofilm/persister apparitions. Thus, we investigated the efficacy of two novel antimicrobial agents, i.e., the synthetic peptide SAAP-148 and the novel antibiotic halicin, against Gram-negative bacteria (GNB) colonizing catheters. The antibacterial, anti-biofilm, and anti-persister activities of both agents were evaluated against Acinetobacter baumannii, Escherichia coli, and Klebsiella pneumoniae strains. The enrolled strains were isolated from catheters and selected based on their resistance to at least three antibiotic classes and biofilm formation potential. Furthermore, the hemolysis and endotoxin neutralization abilities of these agents were explored. The bactericidal activity of both agents was reduced in urine and plasma as compared to buffered saline. In a dose-dependent manner, SAAP-148 and halicin reduced bacterial counts in 24 h preformed biofilms on silicone elastomer discs and eliminated persisters originating from antibiotic-exposed mature 7-day biofilms, with halicin being less effective than SAAP-148. Importantly, SAAP-148 and halicin acted synergistically on E. coli and K. pneumoniae biofilms but not on A. baumannii biofilms. The peptide, but not halicin, decreased the production of IL-12p40 upon exposure to UV-killed bacteria. This preliminary study showed that SAAP-148 and halicin alone/in combination are promising candidates to fight GNB colonizing catheters.
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Affiliation(s)
- Nesrine Bouhrour
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
| | - Tanny J. K. van der Reijden
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
| | - Michella M. Voet
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
| | - Bep Schonkeren-Ravensbergen
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
| | - Robert A. Cordfunke
- Department of Immunology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (R.A.C.); (J.W.D.)
| | - Jan Wouter Drijfhout
- Department of Immunology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (R.A.C.); (J.W.D.)
| | - Farida Bendali
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia 06000, Algeria
| | - Peter H. Nibbering
- Department of Infectious Diseases, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (T.J.K.v.d.R.); (M.M.V.); (B.S.-R.); (P.H.N.)
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Kani MM, Alabdali YAJ. Mobile genetic elements profiling, gene flow, and antimicrobial susceptibility profiles, among Pseudomonas aeruginosa isolates, isolated from Al Muthanna hospitals' wound and burn units in Iraq. Gene 2023; 884:147696. [PMID: 37549857 DOI: 10.1016/j.gene.2023.147696] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 07/03/2023] [Accepted: 08/04/2023] [Indexed: 08/09/2023]
Abstract
The prevalence assessment of integrons among multidrug-resistant strains of Pseudomonas aeruginosa receives much-needed attention from this study, as we achieved our desired objective by conducting a thorough analysis on one hundred swabs obtained from burn and clinical cases at the hospitals present in Al Muthanna governorate during November of the year 2021 through to March of the year 2022. By implementing various methodologies encompassing the scrutiny of growth traits and cellular composition as well as executing biochemical assays, a total of 55 isolates were determined to exhibit the existence of P. aeruginosa. When cultured in Hifluoro agar media, Pseudomonas aeruginosa produced diverse hues; particularly noticeable was its blue-green colour. It was discovered through investigation that there were no intI2 and inti3 genes present in those isolated. Findings from this research disclosed that about one-fifth, or precisely twelve out of fifty-five P. aeruginosa strains screened, had an actively expressed Integrase I gene. The association between elevated rates of resistance to multiple antimicrobial agents and the existence of integrons is worth mentioning. Furthermore, the assemblage of isolates that were efficacious in the presence of integrons demonstrated an augmented resistance towards several frequently employed antibiotics like rifampicin and ceftazidime. In conclusion, it can be stated with confidence that a considerable occurrence of integrons can be observed in Pseudomonas aeruginosa strains that display resistance to numerous pharmaceutical agents. Additionally, the discovery of the intI1 gene in a considerable proportion of isolates underscores the effectiveness of integrons in conferring resistance to a variety of antimicrobial agents. These revelations supplement our insight into antibiotic-resistant mechanisms while also underscoring the necessity for viable strategies aimed at halting and preventing bacterial drug resistance.
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Affiliation(s)
- Marwa Mezher Kani
- Department of Biology, College of Science, Al Muthanna University, Al Samawah, Iraq
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Abbasi E, van Belkum A, Ghaznavi-Rad E. High frequency of carbapenemase in extensively drug-resistant Acinetobacter baumannii isolates in central Iran. World J Microbiol Biotechnol 2023; 39:321. [PMID: 37755552 DOI: 10.1007/s11274-023-03778-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 09/22/2023] [Indexed: 09/28/2023]
Abstract
OBJECTIVES We assessed the frequency of occurrence for infections caused by wild-type A. baumannii, multidrug-resistant (MDR) or XDR A. baumannii, and CRAB. We detected different antibiotic resistance genes in the genomes of infectious A. baumannii strains from central Iran. METHODS This study investigated 546 clinical patient samples for the presence of A. baumannii by using conventional culture methods and PCR. Antibiotic resistance profiles, and the phenotypic and genotypic characteristics of various antibiotic genes were analyzed. RESULTS Out of 546 samples, 87 (15.9%) A. baumannii isolates were obtained using culture and all culture positive samples were also positive by PCR. The most effective antibiotics were polymyxin B (n = 84 strains) (96.6% susceptibility), colistin (n = 81) (93.1%), and ampicillin/sulbactam (n = 18) (20.7%). All clinical A. baumannii isolates were ESBL-positive. The number of CRAB was 84 (96.5%). All CRAB isolates were both MDR and XDR. Of all CRAB isolates, 78 out of 84 (92.4%) produced metallo-β-lactamase (MBL) by phenotypic diagnosis. The most abundant genes were blaPER (32/87; 36.7%), blaTEM (29/87; 33.3%), blaVEB (26/87; 29.8%) for ESBL and Ambler class D β -lactamases included blaOXA-23 (69/84; 82.1%), blaOXA-24 (46/84; 54.7%), MBLs included blaVIM (51/84; 60.7%), and blaIMP (28/84; 33.3%) for carbapenemase. CONCLUSION High frequencies of XDR A. baumannii and CRAB (96.5%) were detected in central Iran. Quick and accurate diagnosis, appropriate isolation of patients colonized or infected by CRAB isolates, application of accurate and effective infection control policies and programs, and appropriate preventive measures are deemed helpful in preventing the further spread of these resistant and clinically highly relevant strains.
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Affiliation(s)
- Elnaz Abbasi
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
- , Khomein, Iran
| | | | - Ehsanollah Ghaznavi-Rad
- Molecular and Medicine Research Center, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran.
- Department of Microbiology & Immunology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran.
- , Arak, Iran.
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Liang R, Wang D, Hu M, Gu Y, Wang M, Hu D, Zhu M, Wang M. In vitro activity of ceftazidime/avibactam, imipenem/relebactam and meropenem/vaborbactam alone or in combination with polymyxin B against carbapenem resistant Acinetobacter baumannii. J Antibiot (Tokyo) 2023; 76:540-547. [PMID: 37217796 DOI: 10.1038/s41429-023-00631-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/01/2023] [Accepted: 05/01/2023] [Indexed: 05/24/2023]
Abstract
Nosocomial infection caused by Carbapenem-Resistant Acinetobacter baumannii (CR-A. baumannii) has become a challenge in clinical practice. Acting as the last resort antibacterial agents for the treatment of CR-A. baumannii infection, polymyxins have high risk of nephrotoxicity and poor clinical efficacy. Ceftazidime/avibactam, imipenem/relebactam and meropenem/vaborbactam are three β-lactam/β-lactamase inhibitor combination complexes that newly approved by the Food and Drug Administration for the treatment of carbapenem-resistant Gram-negative bacterial infection. In this study, we analyzed the in vitro activity of those novel antibacterial agents alone or in combination with polymyxin B against the CR-A. baumannii obtained from a Chinese tertiary hospital. Our results suggest that those novel antibacterial agents should not be used alone for the treatment of CR-A. baumannii infection, as they cannot prevent the regrowth of bacteria at the clinical achievable blood concentration. Imipenem/relebactam and meropenem/vaborbactam should not be used as the substitutes of imipenem and meropenem for polymyxin B based combination therapy against CR-A. baumannii, since they have no edge over imipenem and meropenem on antibacterial activity when in combination with polymyxin B. Ceftazidime/avibactam may be more suitable than ceftazidime for polymyxin B based combination therapy against CR-A. baumannii, as it has a higher synergistic rate with polymyxin B, and the antibacterial activity of ceftazidime/avibactam is much higher than that of ceftazidime when tested in combination with polymyxin B. Ceftazidime/avibactam may also be the better choice than imipenem and meropenem for polymyxin B based combination therapy against CR-A. baumannii, as it has a higher synergistic rate with polymyxin B.
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Affiliation(s)
- Rongxin Liang
- Department of Clinical Laboratory, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China
| | - Dongxing Wang
- Department of Clinical Laboratory, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China
| | - Mingjin Hu
- Department of Gynecology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China
| | - Yuxia Gu
- Department of Clinical Laboratory, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China
| | - Meijun Wang
- Department of Clinical Laboratory, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China
| | - Dan Hu
- Department of Clinical Laboratory, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China
| | - Mingan Zhu
- Department of Clinical Laboratory, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
| | - Meng Wang
- Department of ophthalmology, Ningbo Yinzhou No.2 Hospital, Medical School of Ningbo University, Ningbo, Zhejiang, 315000, P. R. China.
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Shiralizadeh S, Keramat F, Hashemi SH, Majzoobi MM, Azimzadeh M, Alikhani MS, Karami P, Rahimi Z, Alikhani MY. Investigation of antimicrobial resistance patterns and molecular typing of Pseudomonas aeruginosa isolates among Coronavirus disease-19 patients. BMC Microbiol 2023; 23:84. [PMID: 36991311 PMCID: PMC10052215 DOI: 10.1186/s12866-023-02825-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND Pseudomonas aeruginosa is a common co-infecting pathogen recognized among COVID-19 patients. We aimed to investigate the antimicrobial resistance patterns and molecular typing of Pseudomonas aeruginosa isolates among Coronavirus disease-19 patients. METHODS Between December 2020 and July 2021, 15 Pseudomonas aeruginosa were isolated from COVID-19 patients in the intensive care unit at Sina Hospital in Hamadan, west of Iran. The antimicrobial resistance of the isolates was determined by disk diffusion and broth microdilution methods. The double-disk synergy method, Modified Hodge test, and polymerase chain reaction were utilized to detect Pseudomonas aeruginosa extended spectrum beta-lactamase and carbapenemase producers. Microtiter plate assay was performed to evaluate the biofilm formation ability of the isolates. The isolates phylogenetic relatedness was revealed using the multilocus variable-number tandem-repeat analysis method. RESULTS The results showed Pseudomonas aeruginosa isolates had the most elevated resistance to imipenem (93.3%), trimethoprim-sulfamethoxazole (93.3%), ceftriaxone (80%), ceftazidime (80%), gentamicin (60%), levofloxacin (60%), ciprofloxacin (60%), and cefepime (60%). In the broth microdilution method, 100%, 100%, 20%, and 13.3% of isolates showed resistance to imipenem, meropenem, polymyxin B, and colistin, respectively. Ten (66.6%) isolates were identified as multiple drug resistance. Carbapenemase enzymes and extended spectrum beta-lactamases were identified in 66.6% and 20% of the isolates, respectively and the biofilm formation was detected in 100% of the isolates. The blaOXA-48, blaTEM, blaIMP, blaSPM, blaPER, blaVEB, blaNDM, blaSHV, and blaCTX-M genes were detected in 100%, 86.6%, 86.6%, 40%, 20%, 20%, 13.3%, 6.6%, and 6.6% of the isolates, respectively. The blaVIM, blaGIM, blaGES, and blaMCR-1 genes were not identified in any of the isolates. The MLVA typing technique showed 11 types and seven main clusters and most isolates belong to cluster I, V and VII. CONCLUSION Due to the high rate of antimicrobial resistance, as well as the genetic diversity of Pseudomonas aeruginosa isolates from COVID-19 patients, it is indispensable to monitor the antimicrobial resistance pattern and epidemiology of the isolates on a regular basis.
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Affiliation(s)
- Somaye Shiralizadeh
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
| | - Fariba Keramat
- Department of Infectious Diseases, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
- Infectious Disease Research Center, Hamadan University of Medical Sciences, Hamadan, IR , Iran
| | - Seyyed Hamid Hashemi
- Department of Infectious Diseases, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
- Infectious Disease Research Center, Hamadan University of Medical Sciences, Hamadan, IR , Iran
| | - Mohammad Mehdi Majzoobi
- Department of Infectious Diseases, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
- Infectious Disease Research Center, Hamadan University of Medical Sciences, Hamadan, IR , Iran
| | - Masoud Azimzadeh
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
| | | | - Pezhman Karami
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
| | - Zahra Rahimi
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran
| | - Mohammad Yousef Alikhani
- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, IR, Iran.
- Infectious Disease Research Center, Hamadan University of Medical Sciences, Hamadan, IR , Iran.
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10
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Hajikhani B, Sameni F, Ghazanfari K, Abdolali B, Yazdanparast A, Asarehzadegan Dezfuli A, Nasiri MJ, Goudarzi M, Dadashi M. Prevalence of blaNDM-producing Acinetobacter baumannii strains isolated from clinical samples around the world; a systematic review. GENE REPORTS 2023. [DOI: 10.1016/j.genrep.2022.101728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Agyepong N, Fordjour F, Owusu-Ofori A. Multidrug-resistant Acinetobacter baumannii in healthcare settings in Africa. FRONTIERS IN TROPICAL DISEASES 2023. [DOI: 10.3389/fitd.2023.1110125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
The emergence of multidrug-resistant Acinetobacter baumannii is a major concern to healthcare providers and facilities in many parts of the world. This bacterial pathogen is commonly implicated in hospital-acquired infections, particularly in critically ill patients admitted to the intensive care unit (ICU). The extensive use of antibiotics, particularly in ICUs, and the lack of proper infection control interventions in many hospitals have led to an increased emergence of multidrug-resistant A. baumannii. Infections due to multidrug-resistant A. baumannii are associated with prolonged hospital stays and high morbidity and mortality, particularly among hospitalized ICU patients. The lack of antibiotic stewardship programmes in many healthcare facilities has exacerbated the burden of A. baumannii infections in many parts of Africa. This review discusses the prevalence and antibiotic-resistance pattern of the multidrug-resistant A. baumannii, and the possible ways to address or minimise its emergence in healthcare settings in Africa.
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12
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Chia-Wei L, Cheng JF, Tung KC, Hong YK, Lin JH, Lin YH, Tsai CA, Lin SP, Chen YC, Shi ZY, Huang YT, Liu PY. Evolution of trimethoprim/sulfamethoxazole resistance in Shewanella algae from the perspective of comparative genomics and global phylogenic analysis. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2022; 55:1195-1202. [PMID: 34732312 DOI: 10.1016/j.jmii.2021.09.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 08/22/2021] [Accepted: 09/15/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Shewanella algae is a zoonotic marine bacterium that causes a variety of infections in immunocompromised patients or those who have been exposed to seawater. The development of trimethoprim/sulfamethoxazole (TMP/SMX) resistance in S. algae are found in human and environment isolates during the past ten years, and thus the treatment options are decreasing. METHODOLOGY In the study, we conduct a comparative genomic study to identify the resistant mechanism of TMP/SMX-resistance in S. algae. RESULTS We found the resistance of TMP/SMX in S. algae is associated with the existence of sul1 and dfrA12 within the class 1 integron. The gene cassette dfra12-aadA2-qacEΔ1/sul1 within the class 1 integron is highly conserved. In addition, the class 1 integron and encapsulated sul1 are significantly enriched in Enterobacteriaceae in NCBI and UniProt databases. CONCLUSION Our study suggests that the horizontal transfer of TMP/SMX resistance via class 1 integron is most frequently occurred within Enterobacteriaceae and has spread to a wide range of sources including soil, poultry, and marine water.
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Affiliation(s)
- Liu Chia-Wei
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Jan-Fang Cheng
- Department of Energy, Joint Genome Institute, Walnut Creek, CA, USA
| | - Kwong-Chung Tung
- Department of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Kai Hong
- Department of Computer Science and Information Engineering, National Chung Cheng University, Chia-Yi, Taiwan
| | - Jyun-Hong Lin
- Department of Computer Science and Information Engineering, National Chung Cheng University, Chia-Yi, Taiwan
| | - Yu-Hui Lin
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Che-An Tsai
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Shih-Ping Lin
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yung-Chun Chen
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Zhi-Yuan Shi
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yao-Ting Huang
- Department of Computer Science and Information Engineering, National Chung Cheng University, Chia-Yi, Taiwan.
| | - Po-Yu Liu
- Division of Infectious Diseases, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan; Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan; Ph.D. Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan.
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13
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Kanapathy S, Obande GA, Chuah C, Shueb RH, Yean CY, Banga Singh KK. Sequence-Specific Electrochemical Genosensor for Rapid Detection of blaOXA-51-like Gene in Acinetobacter baumannii. Microorganisms 2022; 10:1413. [PMID: 35889132 PMCID: PMC9322073 DOI: 10.3390/microorganisms10071413] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/04/2022] [Accepted: 07/07/2022] [Indexed: 11/26/2022] Open
Abstract
Acinetobacter baumannii (A. baumannii) are phenotypically indistinguishable from the Acinetobacter calcoaceticus−A. baumannii (ACB) complex members using routine laboratory methods. Early diagnosis plays an important role in controlling A. baumannii infections and this could be assisted by the development of a rapid, yet sensitive diagnostic test. In this study, we developed an enzyme-based electrochemical genosensor for asymmetric PCR (aPCR) amplicon detection of the blaOXA-51-like gene in A. baumannii. A. baumanniiblaOXA-51-like gene PCR primers were designed, having the reverse primer modified at the 5′ end with FAM. A blaOXA-51-like gene sequence-specific biotin labelled capture probe was designed and immobilized using a synthetic oligomer (FAM-labelled) deposited on the working electrode of a streptavidin-modified, screen-printed carbon electrode (SPCE). The zot gene was used as an internal control with biotin and FAM labelled as forward and reverse primers, respectively. The blaOXA-51-like gene was amplified using asymmetric PCR (aPCR) to generate single-stranded amplicons that were detected using the designed SPCE. The amperometric current response was detected with a peroxidase-conjugated, anti-fluorescein antibody. The assay was tested using reference and clinical A. baumannii strains and other nosocomial bacteria. The analytical sensitivity of the assay at the genomic level and bacterial cell level was 0.5 pg/mL (1.443 µA) and 103 CFU/mL, respectively. The assay was 100% specific and sensitive for A. baumannii. Based on accelerated stability performance, the developed genosensor was stable for 1.6 years when stored at 4 °C and up to 28 days at >25 °C. The developed electrochemical genosensor is specific and sensitive and could be useful for rapid, accurate diagnosis of A. baumannii infections even in temperate regions.
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Affiliation(s)
- Swarnaletchumi Kanapathy
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
| | - Godwin Attah Obande
- Department of Microbiology, Faculty of Science, Federal University of Lafia, Lafia 950101, Nasarawa State, Nigeria;
| | - Candy Chuah
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
- Faculty of Health Sciences, Universiti Teknologi MARA, Kampus Bertam, Kepala Batas 13200, Penang, Malaysia
| | - Rafidah Hanim Shueb
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
| | - Chan Yean Yean
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
| | - Kirnpal Kaur Banga Singh
- Department of Medical Microbiology & Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (S.K.); (C.C.); (R.H.S.); (C.Y.Y.)
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14
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Hubeny J, Korzeniewska E, Buta-Hubeny M, Zieliński W, Rolbiecki D, Harnisz M. Characterization of carbapenem resistance in environmental samples and Acinetobacter spp. isolates from wastewater and river water in Poland. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 822:153437. [PMID: 35122847 DOI: 10.1016/j.scitotenv.2022.153437] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/21/2022] [Accepted: 01/22/2022] [Indexed: 05/29/2023]
Abstract
The aim of this study was to analyze the prevalence of carbapenem resistance genes in Acinetobacter spp. isolated from wastewater in a municipal WWTP and to determine their spread from treated wastewater to river water with the use of conventional and molecular microbiology methods (qualitative and quantitative PCR and metagenomic analysis). Samples of untreated and treated wastewater and samples of river water obtained upstream and downstream from the wastewater discharge point were collected in 3 seasons (February, June, and September) of 2019. Acinetobacter spp. isolates were obtained by the culture method on the CHROMagar™ Acinetobacter medium. Additionally, environmental DNA was extracted from the samples for metagenomic and qPCR analyses. The presence of beta-lactam resistance genes (Ambler class B and D), insertion sequence ISAba1, and class I, II, and III integron-integrase genes was determined, and the bacterial taxonomic structure and wastewater and river samples was analyzed. Out of the 301 isolates obtained on the CHROMagar™ Acinetobacter medium, 258 belonged to the genus Acinetobacter, including 21 isolates that were identified as Acinetobacter baumannii. The highest number of Acinetobacter spp. and A. baumannii isolates were obtained from wastewater and river water samples collected in June and September. The ISAba1/blaOXA-51 complex was identified in 13 isolates, which confirms the occurrence of carbapenem-resistance isolates in the analyzed samples. The number of Acinetobacter isolates carrying antibiotic resistance genes (ARGs) increased in river water samples collected downstream from the wastewater discharge point (48 out of 258 isolates - 18.6%) compared to river water samples collected upstream from the wastewater discharge point (34 out of 258 isolates - 13.2%), which suggests that WWTP is a source of pollution in the natural environment. The conducted research provides evidence that bacteria of the genus Acinetobacter may spread alarming beta-lactam resistance in the environment and, therefore, pose a serious epidemiological threat.
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Affiliation(s)
- Jakub Hubeny
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720 Olsztyn, Poland
| | - Ewa Korzeniewska
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720 Olsztyn, Poland
| | - Martyna Buta-Hubeny
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720 Olsztyn, Poland
| | - Wiktor Zieliński
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720 Olsztyn, Poland
| | - Damian Rolbiecki
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720 Olsztyn, Poland
| | - Monika Harnisz
- Department of Water Protection Engineering and Environmental Microbiology, Faculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Prawocheńskiego 1, 10-720 Olsztyn, Poland.
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15
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Lynch JP, Clark NM, Zhanel GG. Infections Due to Acinetobacter baumannii-calcoaceticus Complex: Escalation of Antimicrobial Resistance and Evolving Treatment Options. Semin Respir Crit Care Med 2022; 43:97-124. [PMID: 35172361 DOI: 10.1055/s-0041-1741019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Bacteria within the genus Acinetobacter (principally A. baumannii-calcoaceticus complex [ABC]) are gram-negative coccobacilli that most often cause infections in nosocomial settings. Community-acquired infections are rare, but may occur in patients with comorbidities, advanced age, diabetes mellitus, chronic lung or renal disease, malignancy, or impaired immunity. Most common sites of infections include blood stream, skin/soft-tissue/surgical wounds, ventilator-associated pneumonia, orthopaedic or neurosurgical procedures, and urinary tract. Acinetobacter species are intrinsically resistant to multiple antimicrobials, and have a remarkable ability to acquire new resistance determinants via plasmids, transposons, integrons, and resistance islands. Since the 1990s, antimicrobial resistance (AMR) has escalated dramatically among ABC. Global spread of multidrug-resistant (MDR)-ABC strains reflects dissemination of a few clones between hospitals, geographic regions, and continents; excessive antibiotic use amplifies this spread. Many isolates are resistant to all antimicrobials except colistimethate sodium and tetracyclines (minocycline or tigecycline); some infections are untreatable with existing antimicrobial agents. AMR poses a serious threat to effectively treat or prevent ABC infections. Strategies to curtail environmental colonization with MDR-ABC require aggressive infection-control efforts and cohorting of infected patients. Thoughtful antibiotic strategies are essential to limit the spread of MDR-ABC. Optimal therapy will likely require combination antimicrobial therapy with existing antibiotics as well as development of novel antibiotic classes.
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Affiliation(s)
- Joseph P Lynch
- Division of Pulmonary, Critical Care Medicine, Allergy, and Clinical Immunology; Department of Medicine; The David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Nina M Clark
- Division of Infectious Diseases, Department of Medicine, Loyola University Medical Center, Maywood, Illinois
| | - George G Zhanel
- Department of Medical Microbiology/Infectious Diseases, University of Manitoba, Max Rady College of Medicine, Winnipeg, Manitoba, Canada
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16
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Nabti LZ, Sahli F, Olowo-Okere A, Benslama A, Harrar A, Lupande-Mwenebitu D, Diene SM, Rolain JM. Molecular Characterization of Clinical Carbapenem-Resistant Enterobacteriaceae Isolates from Sétif, Algeria. Microb Drug Resist 2021; 28:274-279. [PMID: 34860598 DOI: 10.1089/mdr.2021.0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This study aimed to determine the incidence and the molecular mechanisms of carbapenem-resistant Enterobacteriaceae in patients from the Sétif University Hospital, Algeria. Nonduplicate clinical bacterial isolates recovered from patients attending the University Hospital of Sétif were collected between April and October 2018. Species identification was performed by MALDI-TOF/MS (matrix-assisted laser desorption ionization-time of flight mass spectrometry) method. The susceptibility of the isolates to carbapenems was determined using the disc diffusion method. The carbapenem resistant isolates were screened for the presence of common carbapenemase genes (blaKPC, blaOXA-48, blaVIM, blaIMP, and blaNDM) and extended-spectrum β-lactamase (blaCTX, blaTEM, and blaSHV) using PCR and sequencing technique. A total of 123 nonrepetitive Enterobacteriaceae isolates were obtained. Klebsiella pneumoniae (n = 52/42.28%), Escherichia coli (n = 24/19.51%), and Enterobacter cloacae (n = 19/15.45%) were the most prevalent species. The Carba-NP test showed that 6 out of 123 isolates carried carbapenemase enzymes. OXA-48 was found in five isolates (four K. pneumoniae and one E. coli) and NDM-5 in one E. cloacae isolate. We reported for the first time in Algeria the presence of NDM-5 carbapenemase enzyme in a clinical E. cloacae isolate.
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Affiliation(s)
- Larbi Zakaria Nabti
- Department of Biochemistry and Microbiology, Faculty of Sciences, University of M'sila, M'sila, Algeria.,Laboratoire de Microbiologie, Centre Hospitalier Universitaire (CHU) de Sétif, Sétif, Algérie.,Aix Marseille Univ, IRD, APHM, MEPHI, Faculté de Médecine et de Pharmacie, Marseille, France
| | - Farida Sahli
- Laboratoire de Microbiologie, Centre Hospitalier Universitaire (CHU) de Sétif, Sétif, Algérie
| | - Ahmed Olowo-Okere
- Department of Pharmaceutical Microbiology, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Abderrahim Benslama
- Department of Biochemistry and Microbiology, Faculty of Sciences, University of M'sila, M'sila, Algeria
| | - Abdenassar Harrar
- Department of Biochemistry and Microbiology, Faculty of Sciences, University of M'sila, M'sila, Algeria
| | - David Lupande-Mwenebitu
- Aix Marseille Univ, IRD, APHM, MEPHI, Faculté de Médecine et de Pharmacie, Marseille, France
| | - Seydina M Diene
- Aix Marseille Univ, IRD, APHM, MEPHI, Faculté de Médecine et de Pharmacie, Marseille, France.,IHU Méditerranée Infection, Marseille, France
| | - Jean-Marc Rolain
- Aix Marseille Univ, IRD, APHM, MEPHI, Faculté de Médecine et de Pharmacie, Marseille, France.,IHU Méditerranée Infection, Marseille, France
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17
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Javkar K, Rand H, Hoffmann M, Luo Y, Sarria S, Thirunavukkarasu N, Pillai CA, McGann P, Johnson JK, Strain E, Pop M. Whole-Genome Assessment of Clinical Acinetobacter baumannii Isolates Uncovers Potentially Novel Factors Influencing Carbapenem Resistance. Front Microbiol 2021; 12:714284. [PMID: 34659144 PMCID: PMC8518998 DOI: 10.3389/fmicb.2021.714284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 09/01/2021] [Indexed: 12/30/2022] Open
Abstract
Carbapenems-one of the important last-line antibiotics for the treatment of gram-negative infections-are becoming ineffective for treating Acinetobacter baumannii infections. Studies have identified multiple genes (and mechanisms) responsible for carbapenem resistance. In some A. baumannii strains, the presence/absence of putative resistance genes is not consistent with their resistance phenotype-indicating the genomic factors underlying carbapenem resistance in A. baumannii are not fully understood. Here, we describe a large-scale whole-genome genotype-phenotype association study with 349 A. baumannii isolates that extends beyond the presence/absence of individual antimicrobial resistance genes and includes the genomic positions and pairwise interactions of genes. Ten known resistance genes exhibited statistically significant associations with resistance to imipenem, a type of carbapenem: blaOXA-23, qacEdelta1, sul1, mphE, msrE, ant(3")-II, aacC1, yafP, aphA6, and xerD. A review of the strains without any of these 10 genes uncovered a clade of isolates with diverse imipenem resistance phenotypes. Finer resolution evaluation of this clade revealed the presence of a 38.6 kbp conserved chromosomal region found exclusively in imipenem-susceptible isolates. This region appears to host several HTH-type DNA binding transcriptional regulators and transporter genes. Imipenem-susceptible isolates from this clade also carried two mutually exclusive plasmids that contain genes previously known to be specific to imipenem-susceptible isolates. Our analysis demonstrates the utility of using whole genomes for genotype-phenotype correlations in the context of antibiotic resistance and provides several new hypotheses for future research.
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Affiliation(s)
- Kiran Javkar
- Department of Computer Science, University of Maryland, College Park, MD, United States.,Joint Institute for Food Safety and Applied Nutrition, University of Maryland, College Park, MD, United States
| | - Hugh Rand
- Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, Department of Health and Human Services, College Park, MD, United States
| | - Maria Hoffmann
- Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, Department of Health and Human Services, College Park, MD, United States
| | - Yan Luo
- Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, Department of Health and Human Services, College Park, MD, United States
| | - Saul Sarria
- Center for Veterinary Medicine, United States Food and Drug Administration, Department of Health and Human Services, Laurel, MD, United States
| | - Nagarajan Thirunavukkarasu
- Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, Department of Health and Human Services, College Park, MD, United States
| | - Christine A Pillai
- Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, Department of Health and Human Services, College Park, MD, United States
| | - Patrick McGann
- Multidrug Resistant Organism Repository and Surveillance Network, Walter Reed Army Institute of Research, Silver Spring, MD, United States
| | - J Kristie Johnson
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Errol Strain
- Center for Veterinary Medicine, United States Food and Drug Administration, Department of Health and Human Services, Laurel, MD, United States
| | - Mihai Pop
- Department of Computer Science, University of Maryland, College Park, MD, United States
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18
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Vahhabi A, Hasani A, Rezaee MA, Baradaran B, Hasani A, Kafil HS, Soltani E. Carbapenem resistance in Acinetobacter baumannii clinical isolates from northwest Iran: high prevalence of OXA genes in sync. IRANIAN JOURNAL OF MICROBIOLOGY 2021; 13:282-293. [PMID: 34540166 PMCID: PMC8416588 DOI: 10.18502/ijm.v13i3.6388] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Background and Objectives Carbapenem treatment for Acinetobacter baumannii infections presently faces threats owing to the production of several types of carbapenemase enzymes, prevalence of which varies among different countries. We explored the current trend of antibiotic resistance in A. baumannii clinical isolates from North West Iran, sought the mechanism of carbapenem resistance and addressed the sequence type groups in carbapenem resistant A. baumannii (CRAB). Materials and Methods A. baumannii (n=112) isolates were recovered from various clinical specimens of patients admitted in internal, surgery, burn, infectious diseases and various ICUs wards. Genetically confirmed A. baumannii isolates were screened for carbapenem resistance by the Kirby-Bauer and E-test and the presence of bla MBL, bla OXA-like, ISAba1 genes by PCR. Sequence groups were identified by multiplex PCR. Results Multidrug-resistance (MDR) was a characteristic feature of all A. baumannii isolates. Frequency of oxacillinase genes in combination including bla OXA-51-like/bla OXA-23-like, bla OXA-51-like/blaOXA-24/40-likeand bla OXA-51-like/bla OXA-23-like/bla OXA-24/40-like was 82.1%, 36.6% and 25.8% respectively. Blending of oxacillinase and MBL genes was evident in eight bla OXA-23-like positive and 7 bla OXA-24-like positive isolates thereby depicting synchronous etiology of carbapenem resistance. Amongst CRAB isolates, 97.3% contained ISAba1 element and 50.9% belonged to the European clone II. Conclusion Synchronicity among bla OXA-like with bla MBL and ISAba1 gene was a hallmark of this investigation. Though origin or route of transmission was not elucidated in this study but co-existence among OXA and MBL producing genes is a therapeutic concern demanding strict surveillance strategies and control programs to halt the dissemination of these isolates in the hospital setting.
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Affiliation(s)
- Abolfazl Vahhabi
- Immunology Research Center, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Bacteriology and Virology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Alka Hasani
- Immunology Research Center, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Bacteriology and Virology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Clinical Research Development Unit, Sina Educational, Research and Treatment Center, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Ahangarzadeh Rezaee
- Department of Bacteriology and Virology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Akbar Hasani
- Department of Clinical Biochemistry and Laboratory Sciences, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Department of Bacteriology and Virology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elgar Soltani
- Department of Bacteriology and Virology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Clinical Research Development Unit, Sina Educational, Research and Treatment Center, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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19
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Vahhabi A, Hasani A, Rezaee MA, Baradaran B, Hasani A, Samadi Kafil H, Abbaszadeh F, Dehghani L. A plethora of carbapenem resistance in Acinetobacter baumannii: no end to a long insidious genetic journey. J Chemother 2021; 33:137-155. [PMID: 33243098 DOI: 10.1080/1120009x.2020.1847421] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 10/23/2020] [Accepted: 11/02/2020] [Indexed: 01/21/2023]
Abstract
Acinetobacter baumannii, notorious for causing nosocomial infections especially in patients admitted to intensive care unit (ICU) and burn units, is best at displaying resistance to all existing antibiotic classes. Consequences of high potential for antibiotic resistance has resulted in extensive drug or even pan drug resistant A. baumannii. Carbapenems, mainly imipenem and meropenem, the last resort for the treatment of A. baumannii infections have fallen short due to the emergence of carbapenem resistant A. baumannii (CRAB). Though enzymatic degradation by production of class D β-lactamases (Oxacillinases) and class B β-lactamases (Metallo β-lactamases) is the core mechanism of carbapenem resistance in A. baumannii; however over-expression of efflux pumps such as resistance-nodulation cell division (RND) family and variant form of porin proteins such as CarO have been implicated for CRAB inception. Transduction and outer membrane vesicles-mediated transfer play a role in carbapenemase determinants spread. Colistin, considered as the most promising antibacterial agent, nevertheless faces adverse effects flaws. Cefiderocol, eravacycline, new β-lactam antibiotics, non-β-lactam-β-lactamase inhibitors, polymyxin B-derived molecules and bacteriophages are some other new treatment options streamlined.
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Affiliation(s)
- Abolfazl Vahhabi
- Immunology Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
- Department of Bacteriology and Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Alka Hasani
- Immunology Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
- Department of Bacteriology and Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
- Clinical Research Development Unit, Sina Educational, Research and Treatment Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Mohammad Ahangarzadeh Rezaee
- Immunology Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
- Department of Bacteriology and Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Behzad Baradaran
- Immunology Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Akbar Hasani
- Department of Clinical Biochemistry and Laboratory Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I. R. Iran
| | - Hossein Samadi Kafil
- Department of Bacteriology and Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Faeze Abbaszadeh
- Department of Bacteriology and Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Leila Dehghani
- Clinical Research Development Unit, Sina Educational, Research and Treatment Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
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El Hafa H, Nayme K, Sbiti M, Timinouni M, Belhaj A. Evaluation of genetic diversity of carbapenem-resistant Acinetobacter baumannii isolates using ERIC-PCR. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Salmani A, Shakerimoghaddam A, Pirouzi A, Delkhosh Y, Eshraghi M. Correlation between biofilm formation and antibiotic susceptibility pattern in Acinetobacter baumannii MDR isolates retrieved from burn patients. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kurihara MNL, de Sales RO, da Silva KE, Maciel WG, Simionatto S. Multidrug-resistant Acinetobacter baumannii outbreaks: a global problem in healthcare settings. Rev Soc Bras Med Trop 2020; 53:e20200248. [PMID: 33174956 PMCID: PMC7670754 DOI: 10.1590/0037-8682-0248-2020] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/02/2020] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION The increase in the prevalence of multidrug-resistant Acinetobacter baumannii infections in hospital settings has rapidly emerged worldwide as a serious health problem. METHODS This review synthetizes the epidemiology of multidrug-resistant A. baumannii, highlighting resistance mechanisms. CONCLUSIONS Understanding the genetic mechanisms of resistance as well as the associated risk factors is critical to develop and implement adequate measures to control and prevent acquisition of nosocomial infections, especially in an intensive care unit setting.
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Affiliation(s)
| | - Romário Oliveira de Sales
- Universidade Federal da Grande Dourados, Laboratório de Pesquisa
em Ciências da Saúde, Dourados, MS, Brasil
| | - Késia Esther da Silva
- Universidade Federal da Grande Dourados, Laboratório de Pesquisa
em Ciências da Saúde, Dourados, MS, Brasil
| | - Wirlaine Glauce Maciel
- Universidade Federal da Grande Dourados, Laboratório de Pesquisa
em Ciências da Saúde, Dourados, MS, Brasil
| | - Simone Simionatto
- Universidade Federal da Grande Dourados, Laboratório de Pesquisa
em Ciências da Saúde, Dourados, MS, Brasil
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Carbapenemase-Producing Non-Glucose-Fermenting Gram-Negative Bacilli in Africa, Pseudomonas aeruginosa and Acinetobacter baumannii: A Systematic Review and Meta-Analysis. Int J Microbiol 2020; 2020:9461901. [PMID: 33204275 PMCID: PMC7658691 DOI: 10.1155/2020/9461901] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 10/20/2020] [Indexed: 11/24/2022] Open
Abstract
Background Studies have reported that the existence of CP bacteria in Africa, but, in general, comprehensive data about the molecular epidemiology of CP organisms are limited. Therefore, this systematic review and meta-analysis expound the pooled prevalence of CP P. aeruginosa and CP A. baumannii clinical isolates in Africa. It also identified the diversity of carbapenemases or their encoding genes among the isolates in Africa. Lastly, the review observed the trends of these CP isolates in Africa. Methods A comprehensive search was performed between July 2019 and October 2019 in the following databases: PubMed, Google Scholar, and African Journal online. The included articles were published only in English. The screening was done by two authors independently. The data extracted on Excel spreadsheet were transferred to STATA 11 software for analysis. Results From a total of 1,454 articles searched, 42 articles were eligible. Most of the studies were conducted in the North Africa region. But there was no report from Central Africa. The pooled prevalence of CP P. aeruginosa and CP A. baumannii among the clinical specimens in Africa was 21.36% and 56.97%, respectively. OXA-23 and VIM were the most prevailing carbapenemase among P. aeruginosa and A. baumannii, respectively. The cumulative meta-analysis revealed a relative increment of the prevalence of CP P. aeruginosa over time in Africa but it showed a higher prevalence of CP A. baumannii isolates across years. Conclusion The review revealed a high pooled prevalence of CP A. baumannii clinical isolates in Africa which needs urgent action. Moreover, the emergence of concomitant carbapenemases, especially OXA-23 + NDM among CP A. baumannii, was also an alarming problem.
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Hassan PA, Khider AK. Correlation of biofilm formation and antibiotic resistance among clinical and soil isolates of Acinetobacter baumannii in Iraq. Acta Microbiol Immunol Hung 2020; 67:161-170. [PMID: 31833386 DOI: 10.1556/030.66.2019.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 07/17/2019] [Indexed: 01/09/2023]
Abstract
Acinetobacter baumannii is an opportunistic pathogen that is reported as a major cause of nosocomial infections. The aim of this study was to investigate the biofilm formation by A. baumannii clinical and soil isolates, to display their susceptibility to 11 antibiotics and to study a possible relationship between formation of biofilm and multidrug resistance. During 8 months period, from June 2016 to January 2017, a total of 52 clinical and 22 soil isolates of A. baumannii were collected and identified through conventional phenotypic, chromo agar, biochemical tests, API 20E system, and confirmed genotypically by PCR for blaOXA-51-like gene. Antibiotic susceptibility of isolates was determined by standard disk diffusion method according to Clinical and Laboratory Standard Institute. The biofilm formation was studied using Congo red agar, test tube, and microtiter plate methods. The clinical isolates were 100% resistance to ciprofloxacin, ceftazidime, piperacillin, 96.15% to gentamicin, 96.15% to imipenem, 92.31% to meropenem, and 78.85% to amikacin. The soil A. baumannii isolates were 100% sensitive to imipenem, meropenem, and gentamicin, and 90.1% to ciprofloxacin. All A. baumannii isolates (clinical and soil) were susceptible to polymyxin B. The percentage of biofilm formation in Congo red agar, test tube, and microtiter plate assays was 10.81%, 63.51%, and 86.48%, respectively. More robust biofilm former population was mainly among non-MDR isolates. Isolates with a higher level of resistance tended to form weaker biofilms. The soil isolates exhibited less resistance to antibiotics than clinical isolates. However, the soil isolates produce stronger biofilms than clinical isolates.
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Affiliation(s)
- Pakhshan A. Hassan
- 1 Department of Biology, College of Science, Salahaddin University, Erbil, Iraq
| | - Adel K. Khider
- 2 Department of Biology, College of Education, Salahaddin University, Erbil, Iraq
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Garzón V, Bustos RH, G. Pinacho D. Personalized Medicine for Antibiotics: The Role of Nanobiosensors in Therapeutic Drug Monitoring. J Pers Med 2020; 10:E147. [PMID: 32993004 PMCID: PMC7712907 DOI: 10.3390/jpm10040147] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/05/2020] [Accepted: 09/07/2020] [Indexed: 01/01/2023] Open
Abstract
Due to the high bacterial resistance to antibiotics (AB), it has become necessary to adjust the dose aimed at personalized medicine by means of therapeutic drug monitoring (TDM). TDM is a fundamental tool for measuring the concentration of drugs that have a limited or highly toxic dose in different body fluids, such as blood, plasma, serum, and urine, among others. Using different techniques that allow for the pharmacokinetic (PK) and pharmacodynamic (PD) analysis of the drug, TDM can reduce the risks inherent in treatment. Among these techniques, nanotechnology focused on biosensors, which are relevant due to their versatility, sensitivity, specificity, and low cost. They provide results in real time, using an element for biological recognition coupled to a signal transducer. This review describes recent advances in the quantification of AB using biosensors with a focus on TDM as a fundamental aspect of personalized medicine.
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Affiliation(s)
- Vivian Garzón
- PhD Biosciences Program, Universidad de La Sabana, Chía 140013, Colombia;
| | - Rosa-Helena Bustos
- Therapeutical Evidence Group, Clinical Pharmacology, Universidad de La Sabana, Chía 140013, Colombia;
| | - Daniel G. Pinacho
- Therapeutical Evidence Group, Clinical Pharmacology, Universidad de La Sabana, Chía 140013, Colombia;
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Kongthai P, Thummeepak R, Leungtongkam U, Pooarlai R, Kitti T, Thanwisai A, Chantratita N, Millard AD, Sitthisak S. Insight into Molecular Epidemiology, Antimicrobial Resistance, and Virulence Genes of Extensively Drug-Resistant Acinetobacter baumannii in Thailand. Microb Drug Resist 2020; 27:350-359. [PMID: 32716693 DOI: 10.1089/mdr.2020.0064] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Extensively drug-resistant Acinetobacter baumannii (XDR-AB) is a major threat to public health worldwide. A retrospective study for 27 XDR-AB isolates from four tertiary hospitals in Thailand was conducted. Beta-lactamase and virulence genes were characterized by PCR. The blaADC, blaOXA-51, and blaOXA-23 were detected in all isolates, whereas blaPER-1 and blaNDM-1 genes were present in 7.4% and 3.7% of isolates. All isolates had virulence genes, including genes in iron acquisition system, biofilm formation and secretion systems. The plasmids in XDR-AB belonged to GR2 (100%), GR6 (40.7%), and GR1 (7.4%). Multilocus sequence typing sequence types (STs) were further investigated. The data demonstrated that XDR-AB isolates had nine STs: ST195 (n = 4), ST208 (n = 4), ST368 (n = 1), ST451 (n = 5), ST457 (n = 2), ST1947 (n = 1), ST1166 (n = 7), including two novel STs namely ST1682 (n = 2) and ST1684 (n = 1). We observed that the majority ST1166 (25.9%) was associated with the prevalence of GR2 and GR6 plasmids and traU virulence gene. Genome-based single nucleotide polymorphism phylogenetic analysis of the isolates with two novel ST types indicated that the two isolates belonged to the international clone II (IC2) within the same cluster. In conclusion, our data showed the dissemination of XDR-AB isolates harbored virulence genes and antibiotic resistance genes among four hospitals in Thailand. The results highlighted the difficulty posed for the empirical treatment of the patients with the A. baumannii infection.
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Affiliation(s)
- Phattaraporn Kongthai
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Rapee Thummeepak
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Udomluk Leungtongkam
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Renuka Pooarlai
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Thawatchai Kitti
- Faculty of Oriental Medicine, Chiang Rai College, Chiang Rai, Thailand
| | - Aunchalee Thanwisai
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Narisara Chantratita
- Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Andrew D Millard
- Department of Genetics and Genome Biology, University of Leicester, University Road, Leicester, Leicester, United Kingdom
| | - Sutthirat Sitthisak
- Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand.,Center of Excellence in Medical Biotechnology, Naresuan University, Phitsanulok, Thailand
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Fayad N, Kallassy Awad M, Mahillon J. IS 982 and kin: new insights into an old IS family. Mob DNA 2020; 11:24. [PMID: 32641975 PMCID: PMC7335449 DOI: 10.1186/s13100-020-00221-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 06/29/2020] [Indexed: 01/30/2023] Open
Abstract
Insertion sequences (IS) are ubiquitous transposable elements with a very simple organization: two inverted repeats flanking a transposase coding gene. IS982 is one of 26 insertion sequence families known so far. With 70 registered members in the ISFinder database, this family remains somewhat unexplored, despite the association of many of its members with important features such as antibiotic resistance. IS982 has a fairly simple organization with a mean length of ca. 1 Kb, two inverted repeats with conserved 5' AC 3' ends flanking a transposase coding gene and direct repeats of variable lengths. Its transposase has a RNAse-H like chemistry with an atypical DDE motif. In this study, we first highlight the current knowledge on the IS982 family by dissecting its registered members and their characteristics. Secondly, we bring new insights into this old, yet uncharted IS family, by exploring its registered elements, as well as the genomic and proteomic databases of bacterial and archaeal strains. This probing showed that the presence and distribution of this family goes far beyond the clear-cut registry of ISFinder database.
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Affiliation(s)
- Nancy Fayad
- Laboratory of Food and Environmental Microbiology, Earth and Life Institute, Université Catholique de Louvain, Croix du Sud, 2 - L7.05.12, B-1348 Louvain-la-Neuve, Belgium
- Laboratory of Biodiversity and functional genomics, UR-EGP, Faculty of Science, Université Saint-Joseph de Beyrouth, Beirut, Lebanon
| | - Mireille Kallassy Awad
- Laboratory of Biodiversity and functional genomics, UR-EGP, Faculty of Science, Université Saint-Joseph de Beyrouth, Beirut, Lebanon
| | - Jacques Mahillon
- Laboratory of Food and Environmental Microbiology, Earth and Life Institute, Université Catholique de Louvain, Croix du Sud, 2 - L7.05.12, B-1348 Louvain-la-Neuve, Belgium
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Ranjbar R, Farahani A. Study of genetic diversity, biofilm formation, and detection of Carbapenemase, MBL, ESBL, and tetracycline resistance genes in multidrug-resistant Acinetobacter baumannii isolated from burn wound infections in Iran. Antimicrob Resist Infect Control 2019; 8:172. [PMID: 31719975 PMCID: PMC6836547 DOI: 10.1186/s13756-019-0612-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 09/21/2019] [Indexed: 02/07/2023] Open
Abstract
Background Antimicrobial resistance in multidrug-resistant Acinetobacter baumannii (MDR-AB) isolated from burn wound infections is a major concern in intensive care or burns units worldwide, and molecular studies are considered critical strategies for control of MDR-AB outbreaks in this regard. Thus, in this study, antibiotic resistance, biofilm-forming ability, molecular epidemiology of MDR A. baumannii strains recovered from patients with burns were investigated in three major hospital centers of Iran. Methods In this cross-sectional research, 163 non-repetitive A. baumannii strains were tested for susceptibility to antimicrobial agents. Polymerase chain reaction (PCR) was performed to characterize ambler classes A, B, and D β-lactamases, ISAba1 and integrons, biofilm formation was also investigated. Clonal relatedness was analyzed using Pulsed-Field Gel Electrophoresis (PFGE). Results Among 163 A. baumannii strains collected, 94.5% of them were Carbapenem-Non-Susceptible A. baumannii (CNSAB) and also 90.1 and 52.2% of them were Metallo-β-Lactamases (MBL) and Extended-Spectrum β-Lactamases (ESBL) producing isolates, respectively. Colistin and polymyxin B exhibited excellent activity against CNSAB strains. High prevalence of blaOXA − 23-like (85.1%), blaVIM (60.5%), blaPER − 1 (42.3%), tetB (67.8%), and Class 1 integrons (65.6%) were identified in CNSAB strains. ISAba1 element was associated with 42 (25.8%) and 129 (98.5%) of blaOXA-51-like and blaOXA-23-like genes, respectively. 6 clusters with the ability to form strong biofilms were found to be dominant and endemic in our entire areas. Conclusions Results of the present study show that antimicrobial resistance in CNSAB isolates from burn wound infections in monitored hospitals in Iran is multifactorial, and also findings of the study suggested that local antibiotic prescription policies should be regularly reviewed, and efficient infection control measures should be observed. Therefore, further strengthening of surveillance of antimicrobial resistance is urgently needed in these regions.
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Affiliation(s)
- Reza Ranjbar
- 1Molecular Biology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Abbas Farahani
- 2Infectious and Tropical Diseases Research Center, Hormozgan Health Institute, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
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Bitew A. High Prevalence of Multi-Drug Resistance and Extended Spectrum Beta Lactamase Production in Non-Fermenting Gram-Negative Bacilli in Ethiopia. Infect Dis (Lond) 2019; 12:1178633719884951. [PMID: 31723320 PMCID: PMC6836305 DOI: 10.1177/1178633719884951] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 10/06/2019] [Indexed: 11/16/2022] Open
Abstract
Background Emergence of resistance to multiple antimicrobial agents in Non-Fermenting Gram-Negative Bacilli is a major problem to public health, as it limits drug treatment options against infections. The aim of this study was to determine the prevalence of multi-drug resistance and extended spectrum beta lactamase production in Non-Fermenting Gram-Negative Bacilli. Materials and methods Different clinical samples were collected and processed following standard procedures. Each sample was then inoculated onto culture media. Identification, drug susceptibility testing, and extended spectrum beta lactamase production of the isolates were carried out by using the VITEK 2 compact system. Results Among 996 clinical samples, 135 samples yielded Non-Fermenting Gram-Negative Bacilli of which Pseudomonas and Acinetobacter species were the commonest isolates. The overall drug resistance rates of Non-Fermenting Gram-Negative Bacilli were above 80% against ampicillin (89.6%), cefuroxime axetil (88.9%), nitrofurantoin (85.9%), cefalotin (84.4%), cefoxitin (83.7%), cefazolin (83.0%), and cefuroxime (83.0%). Tobramycin with a resistance rate of 19.3% was the most active antimicrobial agent. Out of 135 isolates, 81.5% were multi-drug resistant of which 13.3% were extensively drug resistant and 10.4% were pandrug resistant. Extended spectrum beta lactamase production was detected in 48.9% of the isolates. Conclusions The spectrum of bacterial species isolated was diverse. The isolates demonstrated high level of drug resistance in different classes of antibiotics. The magnitude of multi-drug resistance and the level of extended spectrum beta lactamase production were high. Hence, further studies on multi-drug resistant and extended spectrum beta lactamase producing Non-Fermenting Gram-Negative Bacilli both in the community and in hospital setting are essential.
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Affiliation(s)
- Adane Bitew
- Department of Medical Laboratory Sciences, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Molecular Identification of Gram-Negative Bacteria in Respiratory Samples of Cystic Fibrosis Patients from a Children Referral Hospital in Tehran. ARCHIVES OF PEDIATRIC INFECTIOUS DISEASES 2019. [DOI: 10.5812/pedinfect.64834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Babaie Z, Delfani S, Rezaei F, Norolahi F, Mahdian S, Shakib P. Molecular Detection of Carbapenem Resistance in Acinetobacter Baumannii Isolated From Patients in Khorramabad City, Iran. Infect Disord Drug Targets 2019; 20:543-549. [PMID: 31099322 DOI: 10.2174/1871526519666190517124314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/04/2019] [Accepted: 02/04/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Acinetobacter baumannii is an opportunistic pathogen, which causes a wide range of infections in hospitals, especially in intensive care units. Nowadays, due to the high resistance of Acinetobacter bumanni to antibiotics, this study, in addition to the phenotypic and genotypic investigations of drug resistance, focused on determining the molecular types of Acinetobacter baumannii isolated from patients in Khorramabad city by the pulsed-field gel electrophoresis (PFGE) method. MATERIALS AND METHODS In this cross-sectional study, 50 samples of Acinetobacter baumannii were collected from educational hospitals in Khorramabad city, Iran, from January to August 2015. They were identified in the laboratory using biochemical tests and culture methods. After determining the drug resistance pattern by the disc diffusion method and percentage of resistance genes to carbapenems, Acinetobacter baumannii isolates were analyzed using the PFGE method using the Apa1 enzyme. RESULTS The highest antibiotic resistance observed for Acinetobacter baumannii strains was against ampicillin-sulbactam (100%) and aztreonam (98%). The highest sensitivity was to polymixin B (100%) and colistin (94%), and also to the OXA-51-like gene present in all samples. The OXA-23-like gene was positive in 44 (88%) samples. PFGE results showed that Acinetobacterbaumannii strains had 33 different pulsotype patterns, of which 27 patterns had more than one strain and 23 had only one strain. CONCLUSION Due to the high resistance of Acinetobacter baumannii and its ease of spread and its ability to transfer resistance genes, resistance control methods should be used in the disinfection of hospital areas. Hospital staff should observe hygiene standards and there should also be a reduction in antibiotic use.
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Affiliation(s)
- Zeinab Babaie
- Department of Microbiology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Somayeh Delfani
- Department of Microbiology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Faranak Rezaei
- Department of Microbiology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Fatemeh Norolahi
- Department of Microbiology, School of Medicine, Pasteur Institute University of Medical Sciences, Tehran, Iran
| | - Somayeh Mahdian
- Department of Microbiology, School of Medicine, Ilam University of Medical Sciences, Ilam, Iran
| | - Pegah Shakib
- Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran
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An insight into the emergence of Acinetobacter baumannii as an oro-dental pathogen and its drug resistance gene profile - An in silico approach. Heliyon 2018; 4:e01051. [PMID: 30603692 PMCID: PMC6304470 DOI: 10.1016/j.heliyon.2018.e01051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/10/2018] [Accepted: 12/12/2018] [Indexed: 11/23/2022] Open
Abstract
Background Acinetobacter baumannii, a potential nosocomial pathogen has stealthily gained entry into the oral cavity. Their association with other pathogens like Pseudomonas aeruginosa in chronic and aggressive periodontitis cases is well documented. The magnitude of problem caused by A . baumannii could be attributed to resistance genes acquired by the organism. Since the microbiome of oral cavity is heterogeneous and complex, the transfer of genes from multidrug resistant A . baumannii may be a serious threat in infection control and management. In view of this fact, the present study aims to categorize and characterize drug resistant genes present in each of the 19 genomes of Acinetobacter Sp. selected for the study. Methods About 19 genome sequences of Acinetobacter spp. with the predominance of different strains of A . baumannii was genotyped using in silico restriction digestion and pulse field gel electrophoresis (PFGE). Further, the prevalence of common drug resistant genes in the genome of various Acinetobacter spp. was recorded using in silico PCR analysis. Results Based on the PFGE pattern, phylogenetic tree was constructed and the genomes were clustered into 6 genotypes. Genotype 4 (n = 8; 42.10%) and 5 (n = 6; 31.57%) were predominant, followed by genotypes 2 (n = 2; 10.52%), 1, 3 and 6 (n = 1; 5.26%). Three species were excluded from the list since they were negative for most of the drug resistant genes tested. Prevalence of drug resistant genes in each of the 16 genomes analysed found oxa-51, ISAba 1 and ADC 1 to be the major genes found in A . baumannii. Acinetobacter spp. belonging to genotypes 4 and 5 were found to harbour 6-10 and 2-8 potential drug resistant genes respectively. Conclusion The present study showed cluster of multi-drug resistant genes in genomes analysed, thus, warranting the need for antibiotic surveillance, alternate therapeutic measures and development of novel antimicrobials. An extensive study on the genes conferring drug resistance in this pathogen will open new avenues for battling the entry and spread of this pathogen in vulnerable patient groups.
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DZIRI O, ALONSO CA, DZIRI R, GHARSA H, MARAOUB A, TORRES C, CHOUCHANI C. Metallo-β-lactamases and class D carbapenemases in south-east Tunisia: Implication of mobile genetic elements in their dissemination. Int J Antimicrob Agents 2018; 52:871-877. [DOI: 10.1016/j.ijantimicag.2018.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 05/14/2018] [Accepted: 06/02/2018] [Indexed: 10/28/2022]
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Girija SAS, Jayaseelan VP, Arumugam P. Prevalence of VIM- and GIM-producing Acinetobacter baumannii from patients with severe urinary tract infection. Acta Microbiol Immunol Hung 2018; 65:539-550. [PMID: 30111160 DOI: 10.1556/030.65.2018.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Carbapenems are administered as the final drug of choice for treating complicated nosocomial infections caused by multidrug-resistant Acinetobacter baumannii strains. It is currently a worldwide issue that metallo-β-lactamases (MBLs) as carbapenem-hydrolyzing enzymes are one of the major drug resistance mechanisms. This investigation is thus aimed to assess the prevalence and characterize the MBL-producing strains of A. baumannii both by phenotypic assays and by genotypic characterization. A total of 73 isolates of A. baumannii were phenotypically and genotypically characterized from patients (N = 1,000) with severe urinary tract infection. Tested strains were subjected to double disc synergy testing (DDST) by Kirby-Bauer disc diffusion method with imipenem (IMP) and IMP/EDTA combination discs. Plasmid DNA was molecularly screened for MBL-encoding blaIMP, blaVIM, blaGIM, and blaNDM genes by PCR for the genetic relatedness of the MBL genes with carbapenem resistance. Carbapenem resistance profile showed 100%, 45%, and 49% non-susceptibility against imipenem, doripenem, and meropenem, respectively. Altogether 42.46% (n = 31) of the isolates showed MBL production upon double disc phenotypic test with IMP and IMP/EDTA discs. The blaVIM and blaGIM were detected in 34.24% (n = 25) and 16.43% (n = 12) of the isolates, respectively, while the co-occurrence of blaVIM and blaGIM was 2.73% among the isolates. DDST-positive isolates showed 21.19% and 9.58% strains positive for blaVIM and blaGIM, respectively, whereas 1.36% of the strains for both genes. None of the strains yielded blaIMP and blaNDM genes. The findings of this study showed prevalence of carbapenem resistance among A. baumannii from urine samples and the frequency of blaVIM and blaGIM.
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Affiliation(s)
- Smiline AS Girija
- 1 Department of Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, India
| | | | - Paramasivam Arumugam
- 3 Department of Human Genetics, Centre for Cellular and Molecular Biology, Hyderabad, India
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Moghnieh RA, Kanafani ZA, Tabaja HZ, Sharara SL, Awad LS, Kanj SS. Epidemiology of common resistant bacterial pathogens in the countries of the Arab League. THE LANCET. INFECTIOUS DISEASES 2018; 18:e379-e394. [PMID: 30292478 DOI: 10.1016/s1473-3099(18)30414-6] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 06/03/2018] [Accepted: 06/18/2018] [Indexed: 12/12/2022]
Abstract
No uniformly organised collection of data regarding antimicrobial resistance has occurred in the countries of the Arab League. 19 countries of the Arab League have published data for antimicrobial susceptibility for the WHO priority organisms, and seven of 14 of these organisms are included in this Review (Escherichia coli, Klebsiella spp, Pseudomonas aeruginosa, Acinetobacter baumannii, Salmonella spp, Staphylococcus aureus, and Streptococcus pneumoniae). Although E coli and Klebsiella spp resistance to third-generation cephalosporins is common in all countries, with prevalence reaching more than 50% in Egypt and Syria, carbapenem resistance is emerging, albeit with a prevalence of less than 10%. Conversely, a large amount of carbapenem resistance has been reported for P aeruginosa and A baumannii across the Arab League, reaching 50% and 88% of isolates in some countries. As for Salmonella spp, the prevalence of fluoroquinolone resistance has exceeded 30% in several areas. With regards to the Gram-positive pathogens, the prevalence of meticillin resistance in S aureus is reported to be between 20% and 30% in most countries, but exceeds 60% in Egypt and Iraq. The prevalence of penicillin non-susceptibility among pneumococci has reached more than 20% in Algeria, Egypt, Morocco, Saudi Arabia, and Tunisia. These findings highlight the need for structured national plans in the region to target infection prevention and antimicrobial stewardship.
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Affiliation(s)
- Rima A Moghnieh
- Division of Infectious Diseases, Department of Internal Medicine, Makassed General Hospital, Beirut, Lebanon
| | - Zeina A Kanafani
- Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut, Beirut, Lebanon
| | - Hussam Z Tabaja
- Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut, Beirut, Lebanon
| | - Sima L Sharara
- Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Lyn S Awad
- Pharmacy Department, Makassed General Hospital, Beirut, Lebanon
| | - Souha S Kanj
- Division of Infectious Diseases, Department of Internal Medicine, American University of Beirut, Beirut, Lebanon.
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Khorsi K, Messai Y, Ammari H, Hamidi M, Bakour R. ISAba36 inserted into the outer membrane protein gene carO and associated with the carbapenemase gene bla OXA-24-like in Acinetobacter baumannii. J Glob Antimicrob Resist 2018; 15:107-108. [PMID: 30172044 DOI: 10.1016/j.jgar.2018.08.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/05/2018] [Accepted: 08/20/2018] [Indexed: 10/28/2022] Open
Affiliation(s)
- Khadidja Khorsi
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, P.B. 32 El-Alia, Bab Ezzouar 16111, Algiers, Algeria
| | - Yamina Messai
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, P.B. 32 El-Alia, Bab Ezzouar 16111, Algiers, Algeria
| | - Houria Ammari
- University Hospital Isaad Hassani, Rue Ibrahim Hadjeras, Beni Messous 16206, Algiers, Algeria
| | - Moufida Hamidi
- Hospital Salim Zemirli, Route de Baraki, BP N°71, El Harrach 16000, Algiers, Algeria
| | - Rabah Bakour
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, P.B. 32 El-Alia, Bab Ezzouar 16111, Algiers, Algeria.
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Sung JY. Distribution of Antimicrobial Resistant Genes in Acinetobacter calcoaceticus-baumannii Complex Isolated from Clinical Specimens in Chungcheong, Korea. KOREAN JOURNAL OF CLINICAL LABORATORY SCIENCE 2017. [DOI: 10.15324/kjcls.2017.49.4.427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Ji Youn Sung
- Department of Biomedical Laboratory Science, Far East University, Eumseong, Korea
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Rebbah N, Messai Y, Châtre P, Haenni M, Madec JY, Bakour R. Diversity of CTX-M Extended-Spectrum β-Lactamases in Escherichia coli Isolates from Retail Raw Ground Beef: First Report of CTX-M-24 and CTX-M-32 in Algeria. Microb Drug Resist 2017; 24:896-908. [PMID: 29227186 DOI: 10.1089/mdr.2017.0171] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The aim of this study was to investigate the prevalence and molecular features of extended-spectrum cephalosporin resistance in Escherichia coli isolates contaminating ground beef at retail in Algeria. Of 371 ground beef samples, 27.5% were found to contain cefotaxime-resistant E. coli isolates distributed into A (24.5%), B1 (60.8%), and D (14.7%) phylogroups. A rate of 88.2% of isolates had a multidrug-resistance phenotype. All strains were producers of CTX-M type extended-spectrum β-lactamases (ESBLs): CTX-M-1, CTX-M-3, CTX-M-14, CTX-M-15, CTX-M-24, or CTX-M-32. Conjugation assays allowed the transfer of blaCTX-M-1 in association with IncI1 plasmids, blaCTX-M-15 with IncI1 and IncK+B/O plasmids, blaCTX-M-3 with IncK plasmids, and blaCTX-M-14 with IncF1B or IncK plasmids. Sequence analysis of gyrA and parC genes showed mutations in 98.6% of ciprofloxacin-resistant isolates. The patterns "GyrA: S83L+D87N, ParC: S80I" (46.5%) and "ParC: S80I" (42.3%) were predominant. qnrS1, qnrB, and aac(6')-Ib-cr were detected in 18.7% of isolates. The tet genes, tetA, tetB, and tetA+tetB, were present in 95.7% of tetracycline-resistant isolates. The sul genes (sul1, sul2, sul3, sul1+sul2, sul2+sul3, and sul1+sul3) and the dfr gene clusters (dfrA1, dfrA5, dfrA7, dfrA8, dfrA12, dfrA5+dfrA12, dfrA1+dfrA5, dfrA7+dfrA12, dfrA5+dfrA7, and dfrA1+dfrA5+dfrA7) were found in 96.4% and 85.5% of sulfamethoxazole/trimethoprim-resistant isolates, respectively. Classes 1 and 2 integrons were detected in 67.6% and 9.8% of isolates, respectively. This study highlighted the significant presence of resistance genes, in particular those of CTXM ESBLs, in the beef meat, with the risk of their transmission to humans through food chain.
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Affiliation(s)
- Nesrine Rebbah
- 1 Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , Algiers, Algeria
| | - Yamina Messai
- 1 Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , Algiers, Algeria
| | - Pierre Châtre
- 2 Unité Antibiorésistance et Virulence Bactériennes, Université Lyon-ANSES Site de Lyon , Lyon, France
| | - Marisa Haenni
- 2 Unité Antibiorésistance et Virulence Bactériennes, Université Lyon-ANSES Site de Lyon , Lyon, France
| | - Jean Yves Madec
- 2 Unité Antibiorésistance et Virulence Bactériennes, Université Lyon-ANSES Site de Lyon , Lyon, France
| | - Rabah Bakour
- 1 Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , Algiers, Algeria
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Mathlouthi N, Ben Lamine Y, Somai R, Bouhalila-Besbes S, Bakour S, Rolain JM, Chouchani C. Incidence of OXA-23 and OXA-58 Carbapenemases Coexpressed in Clinical Isolates of Acinetobacter baumannii in Tunisia. Microb Drug Resist 2017; 24:136-141. [PMID: 28691891 DOI: 10.1089/mdr.2016.0306] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Acinetobacter baumannii is an important opportunistic and multidrug-resistant pathogen responsible for nosocomial infections in health facilities. The aim of this study was to characterize the molecular mechanisms of carbapenem resistance in A. baumannii isolates isolated from Mohamed Kassab Orthopedic Institute in Tunis, Tunisia. Twenty-five imipenem-resistant A. baumannii clinical isolates collected between 2013 and 2016 were identified using API 20NE and were confirmed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF/MS). Carbapenemase activity was detected using microbiological tests and PCR. The epidemiological relatedness of the isolates was studied using multilocus sequence typing (MLST). The isolates were resistant to all antibiotics tested with increased minimum inhibitory concentration values (>32 mg/L). The microbiological tests showed that the 25 A. baumannii were positive for modified Hodge test and for the Carba NP test; however, β-lactamase activity was not inhibited by EDTA. All the isolates harbored the naturally occurring blaOXA-51-like gene and the blaOXA-23-like carbapenemase gene. Among these isolates, one isolate coexpressed the blaOXA-58 gene. MLST revealed several sequence types (STs) with the predominance of ST2 imipenem-resistant A. baumannii (14/25; 56%). In this study we report the prevalence of ST2 imipenem resistance and for the first time the coexpression of blaOXA-23 and blaOXA-58 in clinical isolates of A. baumannii in a Tunisian hospital.
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Affiliation(s)
- Najla Mathlouthi
- 1 Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université , Marseille, France .,2 Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, Campus Universitaire, Université Tunis El-Manar , Tunis, Tunisie.,3 Laboratoire de Recherche Sciences et Technologies de l'Environnement, Institut Supérieur des Sciences et Technologies de l'Environnement de Borj-Cedria, Université de Carthage , Technopôle de Borj-Cedria, Hammam-Lif, Tunisie
| | - Yomna Ben Lamine
- 4 Laboratoire de Biologie Clinique, Unité de Microbiologie, Institut Mohamed Kassab d'orthopédie Tunis , Tunis, Tunisie
| | - Rania Somai
- 2 Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, Campus Universitaire, Université Tunis El-Manar , Tunis, Tunisie
| | - Sophia Bouhalila-Besbes
- 4 Laboratoire de Biologie Clinique, Unité de Microbiologie, Institut Mohamed Kassab d'orthopédie Tunis , Tunis, Tunisie
| | - Sofiane Bakour
- 1 Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université , Marseille, France
| | - Jean-Marc Rolain
- 1 Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université , Marseille, France
| | - Chedly Chouchani
- 2 Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, Campus Universitaire, Université Tunis El-Manar , Tunis, Tunisie.,3 Laboratoire de Recherche Sciences et Technologies de l'Environnement, Institut Supérieur des Sciences et Technologies de l'Environnement de Borj-Cedria, Université de Carthage , Technopôle de Borj-Cedria, Hammam-Lif, Tunisie
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Mellouk FZ, Bakour S, Meradji S, Al-Bayssari C, Bentakouk MC, Zouyed F, Djahoudi A, Boutefnouchet N, Rolain JM. First Detection of VIM-4-Producing Pseudomonas aeruginosa and OXA-48-Producing Klebsiella pneumoniae in Northeastern (Annaba, Skikda) Algeria. Microb Drug Resist 2017; 23:335-344. [DOI: 10.1089/mdr.2016.0032] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- Fatma Zohra Mellouk
- Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université, Marseille, France
- Laboratoire de Biochimie et de Microbiologie Appliquée, Département de Biochimie, Université Badji Mokhtar-Annaba, Annaba, Algérie
| | - Sofiane Bakour
- Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université, Marseille, France
| | - Sameh Meradji
- Laboratoire de Biochimie et de Microbiologie Appliquée, Département de Biochimie, Université Badji Mokhtar-Annaba, Annaba, Algérie
| | - Charbel Al-Bayssari
- Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université, Marseille, France
| | | | - Fatiha Zouyed
- Laboratoire central d'EPH EL Hadjar, Annaba, Algérie
| | | | - Nafissa Boutefnouchet
- Laboratoire de Biochimie et de Microbiologie Appliquée, Département de Biochimie, Université Badji Mokhtar-Annaba, Annaba, Algérie
| | - Jean Marc Rolain
- Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université, Marseille, France
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Plasmid borne Carbapenem-Hydrolyzing Class D β-Lactamases (CHDLs) and AdeABC efflux pump conferring carbapenem-tigecycline resistance among Acinetobacter baumannii isolates harboring TnAbaRs. Microb Pathog 2017; 104:310-317. [DOI: 10.1016/j.micpath.2017.01.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 01/22/2017] [Accepted: 01/24/2017] [Indexed: 12/18/2022]
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The Acinetobacter Outer Membrane Contains Multiple Specific Channels for Carbapenem β-Lactams as Revealed by Kinetic Characterization Analyses of Imipenem Permeation into Acinetobacter baylyi Cells. Antimicrob Agents Chemother 2017; 61:AAC.01737-16. [PMID: 28069648 DOI: 10.1128/aac.01737-16] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 12/28/2016] [Indexed: 12/31/2022] Open
Abstract
The number and type of outer membrane (OM) channels responsible for carbapenem uptake in Acinetobacter are still not well defined. Here, we addressed these questions by using Acinetobacter baylyi as a model species and a combination of methodologies aimed to characterize OM channels in their original membrane environment. Kinetic and competition analyses of imipenem (IPM) uptake by A. baylyi whole cells allowed us to identify different carbapenem-specific OM uptake sites. Comparative analyses of IPM uptake by A. baylyi wild-type (WT) cells and ΔcarO mutants lacking CarO indicated that this OM protein provided a carbapenem uptake site displaying saturable kinetics and common binding sites for basic amino acids compatible with a specific channel. The kinetic analysis uncovered another carbapenem-specific channel displaying a somewhat lower affinity for IPM than that of CarO and, in addition, common binding sites for basic amino acids as determined by competition studies. The use of A. baylyi gene deletion mutants lacking OM proteins proposed to function in carbapenem uptake in Acinetobacter baumannii indicated that CarO and OprD/OccAB1 mutants displayed low but consistent reductions in susceptibility to different carbapenems, including IPM, meropenem, and ertapenem. These two mutants also showed impaired growth on l-Arg but not on other carbon sources, further supporting a role of CarO and OprD/OccAB1 in basic amino acid and carbapenem uptake. A multiple-carbapenem-channel scenario may provide clues to our understanding of the contribution of OM channel loss or mutation to the carbapenem-resistant phenotype evolved by pathogenic members of the Acinetobacter genus.
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Mathlouthi N, Al-Bayssari C, Bakour S, Rolain JM, Chouchani C. RETRACTED ARTICLE: Prevalence and emergence of carbapenemases-producing Gram-negative bacteria in Mediterranean basin. Crit Rev Microbiol 2016; 43:43-61. [DOI: 10.3109/1040841x.2016.1160867] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Najla Mathlouthi
- Université Tunis El-Manar, Faculté des Sciences de Tunis, Laboratoire des Microorganismes et Biomolécules Actives, Campus Universitaire, El-Manar II, Tunisia
- Unité de recherche sur les maladies infectieuses et tropicales émergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université, Marseille, France
- Université de Carthage, Institut Supérieur des Sciences et Technologies de l’Environnement de Borj-Cedria, Technopôle de Borj-Cedria, BP-1003, Hammam-Lif, Tunisia
| | - Charbel Al-Bayssari
- Unité de recherche sur les maladies infectieuses et tropicales émergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université, Marseille, France
| | - Sofiane Bakour
- Unité de recherche sur les maladies infectieuses et tropicales émergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université, Marseille, France
| | - Jean Marc Rolain
- Unité de recherche sur les maladies infectieuses et tropicales émergentes (URMITE), UM 63, CNRS 7278, IRD 198, INSERM 1095, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, Aix-Marseille-Université, Marseille, France
| | - Chedly Chouchani
- Université Tunis El-Manar, Faculté des Sciences de Tunis, Laboratoire des Microorganismes et Biomolécules Actives, Campus Universitaire, El-Manar II, Tunisia
- Université de Carthage, Institut Supérieur des Sciences et Technologies de l’Environnement de Borj-Cedria, Technopôle de Borj-Cedria, BP-1003, Hammam-Lif, Tunisia
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Regional differences and trends in antimicrobial susceptibility of Acinetobacter baumannii. Int J Antimicrob Agents 2016; 47:317-23. [DOI: 10.1016/j.ijantimicag.2016.01.015] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/26/2016] [Accepted: 01/29/2016] [Indexed: 12/12/2022]
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Zhang S, Lin W, Yu X. Effects of full-scale advanced water treatment on antibiotic resistance genes in the Yangtze Delta area in China. FEMS Microbiol Ecol 2016; 92:fiw065. [DOI: 10.1093/femsec/fiw065] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/29/2016] [Indexed: 11/13/2022] Open
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Prevalence and Characterization of Integrons in Multidrug Resistant Acinetobacter baumannii in Eastern China: A Multiple-Hospital Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 12:10093-105. [PMID: 26308028 PMCID: PMC4555331 DOI: 10.3390/ijerph120810093] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 08/06/2015] [Accepted: 08/19/2015] [Indexed: 12/25/2022]
Abstract
Objective: The aim of this multiple-hospital study was to investigate the prevalence of integrons in multidrug-resistant Acinetobacter baumannii (MDRAB) in Eastern China, and characterize the integron-integrase genes, so as to provide evidence for the management and appropriate antibiotic use of MDRAB infections. Methods: A total of 425 clinical isolates of A. baumannii were collected from 16 tertiary hospitals in 11 cities of four provinces (Fujian, Jiangsu, Zhejiang and Shandong) from January 2009 to June 2012. The susceptibility of A. baumannii isolates to ampicillin/sulbactam, piperacillin/tazobactam, ceftazidime, ceftriaxone, cefepime, aztreonam, meropenem, amikacin, gentamicin, tobramycin, ciprofloxacin, levofloxacin, sulfamethoxazole/trimenthoprim, minocycline and imipenem was tested, and integrons and their gene cassettes were characterized in these isolates using PCR assay. In addition, integron-positive A. baumannii isolates were genotyped using pulsed-field gel electrophoresis (PFGE) assay, and intI1 gene cassette was sequenced. Results: intI1 gene was carried in 69.6% of total A. baumannii isolates, while intI2 and intI3 genes were not detected. The prevalence of resistance to ampicillin/sulbactam, piperacillin/tazobactam, ceftazidime, ceftriaxone, cefepime, aztreonam, imipenem, meropenem, amikacin, gentamicin, tobramycin, ciprofloxacin, levofloxacin and sulfamethoxazole/trimenthoprim was significantly higher in integron-positive A. baumannii isolates than in negative isolates (all p values <0.05), while no significant difference was observed in the prevalence of minocycline resistance (p > 0.05). PFGE assay revealed 27 PFGE genotypes and 4 predominant genotypes, P1, P4, P7 and P19. The PFGE genotype P1 contained 13 extensive-drug resistant and 89 non-extensive-drug resistant A. baumannii isolates, while the genotype P4 contained 34 extensive-drug resistant and 67 non-extensive-drug resistant isolates, appearing a significant antimicrobial resistance pattern (both p values <0.05). Sequencing analysis revealed two gene cassette assays of aacA4-catB8-aadA1 and dfrXII-orfF-aadA2 in MDRAB isolates. Conclusions: The results of this study demonstrate a high prevalence of class 1 integrons in MDRAB in Eastern China, and a greater prevalence of antimicrobial resistance in intI1 gene-positive MDRAB isolates than in negative isolates. Four predominant PFGE genotypes are identified in intI1 gene-positive MDRAB isolates, in which P4 is an epidemic PFGE genotype in Fujian Province, and it has a high proportion of extensive drug resistant A. baumannii. The gene cassette dfrXII-orfF-aadA2 is reported, for the first time, in A. baumannii strains isolated from Fujian Province, Eastern China.
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